AR is a good player and will continue to put up big numbers for OU. Yes, its true WSU spent and bunch of time and cash on his Dr's and rehabilitation, but its in the past and time to move on.
Look, HCGM is not an easy coach to play for and was once described as "an acquired taste." That's a pretty accurate analysis and holds true today.
It goes both ways...AR didn't find the 'HCGM way' to his liking and moved on.
On the other hand TE, who is indeed the next big thing, flatly proclaimed the manner is which HCGM teaches and runs his program was the main reason he chose WSU over several P5 schools.
That is all.